Homework Help: Entropy of relativistic Boltzmann gas?

1. Mar 3, 2007

mathlete

1. The problem statement, all variables and given/known data

I'm given a relativistic Boltzmann gas and told to find the entropy

2. Relevant equations

$$\epsilon = pc$$
p = 3d momentum
c = speed of light

3. The attempt at a solution

I tried to start by finding the partition function, from which I can just take the derivative, but I don't know how I would sum the energies. Would I merely use p=hw/2*pi summed over all frequencies from 0 to infinity?

2. Mar 5, 2007

dextercioby

The treatment of a photon gas within quantum statistics is a classical subject of statistical physics texts. So open a book...